On Sunday, July 28, 2002, the <a HREF="http://modis.gsfc.nasa.gov" target="outlink">Moderate Resolution Imaging Spectroradiometer</a> (MODIS) on the <a HREF="http://terra.nasa.gov" target="outlink">Terra</a> satellite detected active fire on several fronts on the McNalley Fire in Sequoia National Forest in southern California. MODIS can detect fires even through a thick haze of smoke, such as that seen in this image, which makes it a valuable addition to traditional air plane reconnaissance. Sensor: Terra/MODIS.